Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* VISWS traps */ |
2 | ||
1da177e4 LT |
3 | #include <linux/sched.h> |
4 | #include <linux/kernel.h> | |
5 | #include <linux/init.h> | |
6 | #include <linux/pci.h> | |
7 | #include <linux/pci_ids.h> | |
8 | ||
9 | #include <asm/io.h> | |
10 | #include <asm/arch_hooks.h> | |
11 | #include <asm/apic.h> | |
12 | #include "cobalt.h" | |
13 | #include "lithium.h" | |
14 | ||
15 | ||
16 | #define A01234 (LI_INTA_0 | LI_INTA_1 | LI_INTA_2 | LI_INTA_3 | LI_INTA_4) | |
17 | #define BCD (LI_INTB | LI_INTC | LI_INTD) | |
18 | #define ALLDEVS (A01234 | BCD) | |
19 | ||
20 | static __init void lithium_init(void) | |
21 | { | |
22 | set_fixmap(FIX_LI_PCIA, LI_PCI_A_PHYS); | |
23 | set_fixmap(FIX_LI_PCIB, LI_PCI_B_PHYS); | |
24 | ||
25 | if ((li_pcia_read16(PCI_VENDOR_ID) != PCI_VENDOR_ID_SGI) || | |
c43eaa02 | 26 | (li_pcia_read16(PCI_DEVICE_ID) != PCI_DEVICE_ID_SGI_LITHIUM)) { |
1da177e4 LT |
27 | printk(KERN_EMERG "Lithium hostbridge %c not found\n", 'A'); |
28 | panic("This machine is not SGI Visual Workstation 320/540"); | |
29 | } | |
30 | ||
31 | if ((li_pcib_read16(PCI_VENDOR_ID) != PCI_VENDOR_ID_SGI) || | |
c43eaa02 | 32 | (li_pcib_read16(PCI_DEVICE_ID) != PCI_DEVICE_ID_SGI_LITHIUM)) { |
1da177e4 LT |
33 | printk(KERN_EMERG "Lithium hostbridge %c not found\n", 'B'); |
34 | panic("This machine is not SGI Visual Workstation 320/540"); | |
35 | } | |
36 | ||
37 | li_pcia_write16(LI_PCI_INTEN, ALLDEVS); | |
38 | li_pcib_write16(LI_PCI_INTEN, ALLDEVS); | |
39 | } | |
40 | ||
41 | static __init void cobalt_init(void) | |
42 | { | |
43 | /* | |
44 | * On normal SMP PC this is used only with SMP, but we have to | |
45 | * use it and set it up here to start the Cobalt clock | |
46 | */ | |
47 | set_fixmap(FIX_APIC_BASE, APIC_DEFAULT_PHYS_BASE); | |
48 | setup_local_APIC(); | |
49 | printk(KERN_INFO "Local APIC Version %#lx, ID %#lx\n", | |
50 | apic_read(APIC_LVR), apic_read(APIC_ID)); | |
51 | ||
52 | set_fixmap(FIX_CO_CPU, CO_CPU_PHYS); | |
53 | set_fixmap(FIX_CO_APIC, CO_APIC_PHYS); | |
54 | printk(KERN_INFO "Cobalt Revision %#lx, APIC ID %#lx\n", | |
55 | co_cpu_read(CO_CPU_REV), co_apic_read(CO_APIC_ID)); | |
56 | ||
57 | /* Enable Cobalt APIC being careful to NOT change the ID! */ | |
58 | co_apic_write(CO_APIC_ID, co_apic_read(CO_APIC_ID) | CO_APIC_ENABLE); | |
59 | ||
60 | printk(KERN_INFO "Cobalt APIC enabled: ID reg %#lx\n", | |
61 | co_apic_read(CO_APIC_ID)); | |
62 | } | |
63 | ||
64 | void __init trap_init_hook(void) | |
65 | { | |
66 | lithium_init(); | |
67 | cobalt_init(); | |
68 | } |